Formula: (Zn,Cu)4(SO4)(OH)6.4H2O
Origin of name: for National Museum of Wales
Crystal system: hexagonal
Crystal class: -3
Twinning:
Unit cell:
Colour: pale sea green
Diaphaneity:
Luster: pearly
Habit: plates, smaller than 60 micron, in aggregates
Hardness: 2
Specific gravity: 2.77
Cleavage: none
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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